Field observations, Petrography and microstructures study of Jebale Barez Plutonic complex (East - North East Jiroft)

Jebale Barez Plutonic Complex Is composed of granitoid Intrusive Bodyes and Is located In the East - North East Jiroft and southeastern province of Kerman on The lengths of the 57° 45ʹ east to 58° 00ʹ and Northern latitudes 28° 30ʹ to 29° 00ʹ. Plutonic Complex composed of granodiorite, quartzdiorite, Monzogranite and Porphyritic granite. The microstructures observed in thin sections from about 200 samples in this study were grouped into tree types: (i) magmatic microstructures; (ii) submagmatic microstructures and (iii) Mylonitic microstructures. Magmatic microstructures and submagmatic microstructures located in the central of Mijan and less than in the central of Hishin and Korour area but Mylonitic microstructures observed in all of rims Jebale Barez Plutonic Complex. Field observations, Major structural and morphologic elements suggested that Mijan area is old caldera and Evidence suggested that Magma implemented Sill form in the Jebale Barez Plutonic Complex. Therefore it is assumed that the whole JBPC is located in shear zone. Mijan Old Caldera is feeder zone and magma has been intrusion. Magma has been percolated through Mijan caldera and emplacement Forms of Sill along the shear zone during various periods.